Utilising La Sportiva's patented Lock Harness System technology, which hugs the foot from the inside and combines with the unique deep heel-cups to ensure maximum flexibility when hooking, these climbing shoes are at the top end of the scale when it comes to performance and quality.The P3 (Permanent Power Platform) randing system is the active part of the shoe which works with the base of the foot to spread and maintain tension through time, ensuring a versatile performance and powerful feel in the foot. The innovative Fast Lacing System combined with the lycra tongue provides customisable comfort with an optimised fit.Upper: Combination of suede leather and microfibre, tubular construction.Lining: Toe Pacific, tongue LycraMidsole: Hytrel anatomical support in the metatarsal area of the foot combined with P3 systemSole: 3,5 mm Vibram XS Grip2P3 (Permanent Power Platform)Fast lacing systemLock Harness System for maximum gripFast and precise lacing systemMaximum performance for heel and toe hooksMolded 3-D heel cup in ultra grip rubber for secure heel hookingWeight: 510g (per pair)